#include<cstdio>
using namespace std;
int n,m,i,x,k,arb[2<<14],op,t,v,p,q;
int lsb(int x)
{
    return x&(-x);
}
void add(int poz,int val)
{
    for(int i=poz;i<k;i+=lsb(i)) arb[i]+=val;
}
void substract(int poz,int val)
{
    for(int i=poz;i<k;i+=lsb(i)) arb[i]-=val;
}
int sum(int x)
{
    int sol=0,i;
    for(i=x;i;i-=lsb(i)) sol+=arb[i];
    return sol;
}
int main()
{
    freopen("datorii.in","r",stdin);
    freopen("datorii.out","w",stdout);
    scanf("%d%d",&n,&m);
    k=2<<14;
    for(i=1;i<=n;i++)
    {
        scanf("%d",&x);
        add(i,x);
    }
    for(;m;m--)
    {
        scanf("%d",&op);
        if(!op)
        {
            scanf("%d%d",&t,&v);
            substract(t,v);
        }
        else
        {
            scanf("%d%d",&p,&q);
            printf("%d\n",sum(q)-sum(p-1));
        }
    }
    return 0;
}